Oh, thank you for providing me with this rare knowledge. But what happens while you boil pasta, is pasta turning around and soaking the oil in. I wouldn’t be doing that if it wouldn’t help with pasta stickiness.
And as other people comment here, oil gets into pasta so you can have a problem with sauce not soaking in, but when I’m making something like bolognese, I sometimes pour pasta into the frying pan with the sauce, so it’s getting there for sure.